package yby;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebFilter(urlPatterns = "/yby/*")
public class CoreFilter implements Filter {

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) req;
        HttpServletResponse response = (HttpServletResponse) resp;

        String uri = request.getRequestURI();

        if ("/yby1/login.jsp".equals(uri) || uri.endsWith(".css")) {
            chain.doFilter(req,resp);
            return;
        }

        HttpSession session = request.getSession();
        Object uid = session.getAttribute("UID");

//        if (uid != null) {
//            chain.doFilter(req,resp);
//        }
//        else {
//
//        }
        if (uid == null) {
            response.sendRedirect("/yby1/login.jsp");
            return;
        }
        chain.doFilter(req,resp);

    }

    @Override
    public void destroy() {

    }
}
